2547906745 has 16 divisors (see below), whose sum is σ = 3222829440. Its totient is φ = 1928392704.

The previous prime is 2547906731. The next prime is 2547906749. The reversal of 2547906745 is 5476097452.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2547906745 - 2⁹ = 2547906233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2547906749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52537 + ... + 88633.

It is an arithmetic number, because the mean of its divisors is an integer number (201426840).

Almost surely, 2^2547906745 is an apocalyptic number.

It is an amenable number.

2547906745 is a deficient number, since it is larger than the sum of its proper divisors (674922695).

2547906745 is a wasteful number, since it uses less digits than its factorization.

2547906745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36864.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The square root of 2547906745 is about 50476.7941236367. The cubic root of 2547906745 is about 1365.8232757577.

The spelling of 2547906745 in words is "two billion, five hundred forty-seven million, nine hundred six thousand, seven hundred forty-five".